Re: [PATCH 15/22] arch: vdso: consolidate gettime prototypes

[kernel test robot]

Hi Arnd,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[cannot apply to v6.6 next-20231109]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Arnd-Bergmann/ida-make-ida_dump-static/20231109-005742
base:   linus/master
patch link:    https://lore.kernel.org/r/20231108125843.3806765-16-arnd%40kernel.org
patch subject: [PATCH 15/22] arch: vdso: consolidate gettime prototypes
config: um-allnoconfig (https://download.01.org/0day-ci/archive/20231109/202311091740.g315K93o-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231109/202311091740.g315K93o-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311091740.g315K93o-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> arch/x86/um/vdso/um_vdso.c:17:5: error: conflicting types for '__vdso_clock_gettime'
      17 | int __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts)
         |     ^
   include/vdso/gettime.h:16:5: note: previous declaration is here
      16 | int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts);
         |     ^
   arch/x86/um/vdso/um_vdso.c:58:1: warning: no previous prototype for function '__vdso_getcpu' [-Wmissing-prototypes]
      58 | __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
         | ^
   arch/x86/um/vdso/um_vdso.c:57:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
      57 | long
         | ^
         | static 
   1 warning and 1 error generated.


vim +/__vdso_clock_gettime +17 arch/x86/um/vdso/um_vdso.c

f1c2bb8b9964ed arch/um/sys-x86_64/vdso/um_vdso.c Richard Weinberger 2011-07-25  16  
82210fc778982d arch/x86/um/vdso/um_vdso.c        Arnd Bergmann      2019-10-27 @17  int __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts)
f1c2bb8b9964ed arch/um/sys-x86_64/vdso/um_vdso.c Richard Weinberger 2011-07-25  18  {
f1c2bb8b9964ed arch/um/sys-x86_64/vdso/um_vdso.c Richard Weinberger 2011-07-25  19  	long ret;
f1c2bb8b9964ed arch/um/sys-x86_64/vdso/um_vdso.c Richard Weinberger 2011-07-25  20  
5541992e512de8 arch/x86/um/vdso/um_vdso.c        Ammar Faizi        2022-12-24  21  	asm("syscall"
5541992e512de8 arch/x86/um/vdso/um_vdso.c        Ammar Faizi        2022-12-24  22  		: "=a" (ret)
5541992e512de8 arch/x86/um/vdso/um_vdso.c        Ammar Faizi        2022-12-24  23  		: "0" (__NR_clock_gettime), "D" (clock), "S" (ts)
5541992e512de8 arch/x86/um/vdso/um_vdso.c        Ammar Faizi        2022-12-24  24  		: "rcx", "r11", "memory");
f1c2bb8b9964ed arch/um/sys-x86_64/vdso/um_vdso.c Richard Weinberger 2011-07-25  25  
f1c2bb8b9964ed arch/um/sys-x86_64/vdso/um_vdso.c Richard Weinberger 2011-07-25  26  	return ret;
f1c2bb8b9964ed arch/um/sys-x86_64/vdso/um_vdso.c Richard Weinberger 2011-07-25  27  }
82210fc778982d arch/x86/um/vdso/um_vdso.c        Arnd Bergmann      2019-10-27  28  int clock_gettime(clockid_t, struct __kernel_old_timespec *)
f1c2bb8b9964ed arch/um/sys-x86_64/vdso/um_vdso.c Richard Weinberger 2011-07-25  29  	__attribute__((weak, alias("__vdso_clock_gettime")));
f1c2bb8b9964ed arch/um/sys-x86_64/vdso/um_vdso.c Richard Weinberger 2011-07-25  30  

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